Configuring HTTP Error Handling 
Error pages are part of the default error handling mechanism and you can customize them according to your specific needs. By default, an error page contains limited information about the HTTP error status code, and a trace ID of the error. It can be configured to display additional information such as error details, message ID of the error type, correction hints and link to the troubleshooting guide.
Note
The trace ID is the ID, by which you can look up the error in server trace files. The message ID is an identifier for the type of the error that has happened.
These pages also provide the feature for the user to trigger a report that represents a snapshot of the system at the moment when the error occurred. In this way, you can gather all required information to solve the problem and you do not need to reproduce it.
You can change and adapt the error handling mechanism to your specific needs. You can also monitor 500 “Internal Server Error” responses and investigate what caused the system problems.
Note
Errors returned by Internet Communication Manager (ICM) or Web dispatcher need to be configured separately.
Procedure
You can perform the following tasks related to the error pages:
Generate an error report that contains all required information about a certain problem.
More information: Generating Error Reports
Monitor 500 “Internal Server Error” error responses.
More information: Monitoring Internal Server Error 500 Error Responses
Configure or override the default error handling mechanism with a custom one suitable for your application.
Provide your own functionality for the default error pages.
More information: Defining Custom Error Pages Handling
Customize only the user interface of the error pages without changing its logic.
More information: Changing the Look and Feel of the Default Error Pages
Replace the default implementation of the error pages with a custom one.
More information: Customizing the Default Error Pages
Customize the error response when requesting an application that is currently stopped.
More information: Providing Custom Response Messages When Requesting Stopped Applications
Define your own HTTP response status codes.
More information: Defining Custom HTTP Response Status Codes